docs: def pretty_str(self, indent=0):
          """Return a human-readable string representation of this object.
  
          Kwargs:
              indent (int): The amount of spaces to use as indentation.
          """
          spaces = ' ' * indent
          pretty = '{}({})' if self.parenthesis else '{}{}'
          name = ('{}.{}'.format(self.field_of.pretty_str(), self.name)
                  if self.field_of else self.name)
          return pretty.format(spaces, name)